Atif Mian Profile picture
23 Mar, 10 tweets, 3 min read
Today's question for #WhyStudyEconomics

Should we provide relief to debtors when there is a recession, such as in this pandemic or the housing crisis before that?

The answer illustrates how good economics is about making the sum bigger than its parts
Each debtor has a lender. So providing relief to the debtor means we are taking something away from the lender

Isn't this a zero sum game then?

Why provide relief to the debtor at the expense of the lender?

Economics tells us that this apparently simple logic is incorrect
The reason: In the midst of a recession, demanding an additional dollar from a debtor takes away one dollar from their total spending

But giving the same dollar to the lender does not add this dollar back into total spending, because lenders try to save some portion of it
Thus demanding business-as-usual debt repayment in the midst of a recession reduces overall demand

This in turn raises unemployment, forcing indebted people to restrict spending further

There is a negative doom loop that kicks in, making most of the people worse off
Demanding strict debt repayments is not a zero sum game in the midst of a recession - it is a *negative* sum game

It is to a society's overall benefit that they provide some relief to debtors in times of collective difficulty
Keynes famously made this argument in his brilliant book "the economic consequences of the peace"

saying that it is in the collective interest of Europe that Allied Powers do not demand high war reparations from a defeated Germany

he was proven correct
@profsufi and I made a similar argument regarding the 2008 recession

unfortunately sufficient debt relief was not provided, resulting in four million+ foreclosures and additional damage to the economy that could have been avoided
Here is one study from @paulgp and authors that shows that states with more favorable debt relief policies ended up experiencing a milder recession

There is a lot more evidence cited in this paper as well

papers.ssrn.com/sol3/papers.cf…
Luckily the response to the Covid-19 recession did provide immediate relief to affected debtors. Here is a nice talk on the subject by the brilliant Amit Seru of Stanford

If you want to read more on this topic, including how to design better financial contracts, here is a cute little book

amazon.com/House-Debt-Rec…

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More from @AtifRMian

19 Mar
I'll do occasional thread on #WhyStudyEconomics - explaining how this science can be used for our collective good when used properly

Today's question: Should we have a minimum wage?
Questions in economics are social in nature which can understandably trigger an ideological/emotional response

But one must resist that initial temptation and start with a formal framework to think objectively about the question at hand

This is what theorists try to do
For a question on the minimum wage, we must start with a theory of how labor market works

A theory does not tell us how labor markets *actually* work, but it guides us by spelling out conditions under which a minimum wage is desirable versus not
Read 13 tweets
25 Feb
The administration is reviewing U.S. economic resilience - this is much needed

Why is it necessary? And how should one do it?
Resilience => ability to absorb "shocks" such as disruptions in microchips or bursting of a bubble without major layoffs

An inability to do so is very costly. This study by @ojblanchard1 @LHSummers & Cerutti shows that short-run losses often become more permanent Image
So how can we make the U.S. economy more resilient?

There are two sides to it (as always)

The supply-side and the demand-side

The administration is currently focusing on the supply-side
Read 7 tweets
30 Jan
GameStop is an interesting story, but there is a bigger and much more serious question about financial markets

As someone who studies finance, I know finance has tremendous potential to benefit society

But there is something serious to worry in the trend since the 80s
Let's start with the story we like to tell students in finance 101

"financial markets take money from savers and give it to entrepreneurs who invest it to make economic growth possible"

This is indeed a very important function of financial markets

However ....
Since the 80s financial market has increasingly been doing something quite different

The size of financial sector has almost *doubled* in terms of credit given out per $ of output

Yet, investment has not risen at all and in fact been trending down
Read 7 tweets
19 Jan
US needs a strong immigration policy to reverse the long-run decline in growth

To understand the argument, we'd need to get a bit into growth accounting

20 year growth rate just before the pandemic was at its lowest since WWII (black line)
Growth can be decomposed into growth in hours people work (red line) and productivity growth (blue line)

Both components are also at their lowest, but decline in hours growth is the steepest. Why?

A combination of two factors:
(i) the big run-up in women entering the labor force is maturing out

(ii) work force is aging / fertility rate declining. In fact, U.S. fertility rate is now well below replacement

So red line will continue to push growth downwards
Read 6 tweets
4 Jan
The Covid-19 recession is the strangest recession in living memory

For starters, it is the most unequal recession - like the virus, decimating some and untouching others.
It is also the most global, with practically all countries going down at the same time
The most unequal recession comes at a time when the world was already most unequal in living memory
Read 6 tweets
26 Oct 20
The stock market is not the economy. In fact, rising stock market can be bad news for most!

Annual rise in stock value
1989-2017: 7.5%
1966-1988: 1.6%

Annual rise in corporate output
1989-2017: 2.6%
1966-1988: 3.9%

Corporations produced *less* but gained more in value!
Why?
First, stock market only values profits, and more of corporate output is now going to profits at the expense of workers

Annual rise in corporate profit
1989-2017: 5.1%
1966-1988: 1.8%
Second, the same dollar of profit is now valued more by the markets (the "valuation effect").

See this terrific paper by @ProfGreenwald, Lettau and Ludvigson
nber.org/system/files/w…
Read 4 tweets

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